I've been trying to lower the speed of my watercooling pump to test tempertures. I tried using speed fan to configure the speed, but apparently I can't. The 4 pin connector is connected to the PWM header on the motherboard so I'm getting a reading but I can't change it.

Is there a program out there that would allow me to change the speed of a fan/pump? Thanks.

The problem is that only two wires are connected to PWM header of the pump. For the power I have to connect it to a molex header which has an additional two wires on it, so I don't think I can adjust the speed as I think there is no signal wire on the 4 pin header.

I forgot to mention that you need to calibrate it with your pump. Just hit the 'calibrate' button and it takes about a minute for it to work through the speeds. You'll probably find that it delivers the pump's rated speed at 60%